计算
时，令
，则原式
错
对
计算时，令，则原式
错
对
(int )_(-2)^1dfrac (dx)({(11+5x))^3}=_______._______.
(2) (int )_(-2)^1dfrac (dx)({(11+5x))^3} :
(int )_(dfrac {3)(4)}^1dfrac (dx)(sqrt {1-x)-1}..
1.计算下列定积分:-|||-(1) (int )_(dfrac {pi )(3)}^pi sin (x+dfrac (pi )(3))dx ;-|||-(2)
2.计算下列定积分:-|||-(1) (int )_(dfrac {pi )(3)}^pi sin (x+dfrac (pi )(3))dx;-|||-(2)
(int )_(0)^1dfrac (x+2)(sqrt {x+1)}dx=( )(int )_(0)^1dfrac (x+2)(sqrt {x+1)}dx=
(int )_(0)^1dfrac (dx)({x)^2sqrt (1-x)} 发散-|||-D (int )_(0)^1dfrac (dx)(xsqrt {1
int dfrac ({x)^3}({(1+{x)^2)}^2}dx=A.int dfrac ({x)^3}({(1+{x)^2)}^2}dx=B.int df
三、解答题-|||-1.计算 (int )_(1)^3((x)^3+dfrac (3)(x)+1)dx-|||-2.计算 (int )_(0)^2pi |sin
1.计算下列定积分:-|||-(1) (int )_(dfrac {pi )(3)}^pi sin (x+dfrac (pi )(3))dx-|||-(2) (